When God gave Moses and Aaron the rules for the Passover, some might have sounded unconventional—for example, the clear prohibition against breaking any bones of the lamb that was sacrificed and eaten by each household. Why did God insist on this?

The image comes from the ancient quarries where highly-trained stonemasons carefully chose the stones used in construction. No stone was more important than the cornerstone because the integrity of the whole structure depended on the cornerstone containing exactly the right lines.

When God gave Moses and Aaron the rules for the Passover, some might have sounded unconventional—for example, the clear prohibition against breaking any bones of the lamb that was sacrificed and eaten by each household. Why did God insist on this?

The image comes from the ancient quarries where highly-trained stonemasons carefully chose the stones used in construction. No stone was more important than the cornerstone because the integrity of the whole structure depended on the cornerstone containing exactly the right lines.